Question

我一直在webpack中遇到这个非常烦人的错误，即使我运行webpack --display-error-details，也没有错误。但是无论何时我运行webpack-dev-server我都会收到以下错误。我真的看不出我的配置出错了。

Entry module not found: Error: Cannot resolve 'file' or 'directory' 
./frontend/app.jsx

module.exports = {
  context: __dirname,
  entry: './frontend/app.jsx',
  output: {
    filename: 'bundle.js',
    path: __dirname 
  },
  module: {
    loaders: [
      {
        test: [ /\.js$/, /\.jsx$/],
        exclude: /(node_modules)/,
        loader: 'babel-loader',
        query: {
          presets: ['es2015', 'react']
        }
      },
      {
        test: /\.scss$/,
        use: ['style-loader', 'css-loader', 'sass-loader']
      }
    ]
  },
  devtool: 'source-map',
  resolve: {
    extensions: ['.js', '.jsx', '.scss' ]
  }
};

{
  "name": "basicapp",
  "version": "1.0.0",
  "description": "",
  "main": "app.jsx",
  "author": "",
  "license": "ISC",
  "scripts": {
    "start": "webpack-dev-server --env development",
    "dev-server": "nodemon ./server.js localhost 8080",
    "build": "webpack --env production"
  },
  "dependencies": {
    "babel-cli": "^6.24.0",
    "babel-core": "^6.24.0",
    "babel-loader": "^6.4.1",
    "babel-preset-es2015": "^6.24.0",
    "babel-preset-react": "^6.23.0",
    "css-loader": "^0.27.3",
    "express": "^4.15.2",
    "express-graphql": "^0.6.3",
    "lodash": "^4.17.4",
    "node-sass": "^4.5.1",
    "react": "^15.4.2",
    "react-dom": "^15.4.2",
    "react-redux": "^5.0.3",
    "react-router": "^4.0.0",
    "redux": "^3.6.0",
    "sass-loader": "^6.0.3",
    "webpack": "^2.3.2"
  },
  "devDependencies": {
    "html-webpack-plugin": "^2.28.0",
    "node-sass": "^4.5.1",
    "nodemon": "^1.11.0",
    "sass-loader": "^6.0.3"
  }
}

Answer 1

Webpack可能没有按照您的意愿处理__dirname，可能正在将其解析为/。尝试将此添加到您的webpack配置：

{
  node: {
    __dirname: true
  }
}

Answer 2

这可能是由于多种原因，确定确切问题的最佳方法是尝试以下两个命令：

如果您单独运行webpack 1/2，请使用代码段：

#include "RandomDotNet.h"
#include "RandomPS5.h"
#include <Windows.h>

// Length of charset string
#define CHARSETLEN 62

// Random charset
const char charset[CHARSETLEN + 1] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";

// Function that processes a record like PowerShell does for -ObjectList
void processRecord(CHAR *string, int len, Random *r) {

    // Processed characters
    int processed = 0;

    int i, indexToReplace;
    CHAR temp;

    // Iterate the charset
    for (i = 0; i < CHARSETLEN; ++i) {

        if (processed < len) {
            string[processed] = charset[i];
        }
        else if (r->Next(processed + 1) < len) {
            string[r->Next(len)] = charset[i];
        }
        ++processed;

    }

    // Iterate selected items to return them in "random" order
    for (i = 0; i < len; ++i) {

        // Get random index
        indexToReplace = r->Next(i, len);

        if (i != indexToReplace) {

            // Swap
            temp = string[i];
            string[i] = string[indexToReplace];
            string[indexToReplace] = temp;

        }

    }

    // Terminate the string
    string[len] = '\0';

}
int main(int argc, char* argv[]){

    // Example usage with a given seed
    Random *r = new RandomPS5(1000);

    // Length of random string
    int len = 49;

    // Random string buffer
    CHAR *buffer = (CHAR*)malloc(len + 1);

    // ([char[]](Get-Random -Input $(48..57 + 65..90 + 97..122) -Count 49 -SetSeed 1000)) -Join ""
    processRecord(buffer, len, r);

    // Produces: y6FLfcKrpINqgP25GXS7Z0dVBmJOzntlQ3hjbHMAU1ExkewWY
    printf("Random string: %s", buffer);

    delete r;

    return 0;

}

如果您正在运行webpack dev服务器，请使用代码段：

webpack --display-error-details

这将在控制台中提供详细的错误报告

如何解决webpack中的“无法解析'文件'”错误？

2 个答案: